Posted By MP Grayson The only drawback I can think of is cost. They are not cheap. I've never seen or heard of one used in anger, but as these are generally used for chip pan fires, I think it’s fair to say that you are going to have to get the vim out and rollup yer sleeves either way. Crack on

Posted By Messy Shaw The biggest disadvatage in my opinion is that the entire contents of the extinguisher needs to be discharged to be effective. This is unusual as most people are used to stopping applying firefighting media when the fire is 'out'. This may also require the user to stay near to the fire longer than they would with other extinguisher types and the potential to inhale more smoke and fumes is increased. However they are the absolute best extinguishers for deep fat fires and any of the problems listed above can be controlled by adequate training. Therein though lies another pitfall. In my experience, It's often difficult to train cocky know-it-all-chefs who just won't listen as they see any lack of knowledge reduces their status inthe kitchen. In any case, environments where wet chemical exts are found (commercial kitchens) tend to employ very transient (perhaps foreign with little English) workforces that are dificult to retain and therefore train.